isSurrogateHigh(char c)
Check if the value of a character belongs to a certain interval
that indicates it's the higher part of a surrogate pair.

static boolean

isSurrogateLow(char c)
Check if the value of a character belongs to a certain interval
that indicates it's the lower part of a surrogate pair.

static boolean

isSurrogatePair(char[] text,
int idx)
Checks if two subsequent characters in a character array are
are the higher and the lower character in a surrogate
pair (and therefore eligible for conversion to a UTF 32 character).

static boolean

isSurrogatePair(java.lang.String text,
int idx)
Checks if two subsequent characters in a String are
are the higher and the lower character in a surrogate
pair (and therefore eligible for conversion to a UTF 32 character).